1997A&A...325L..17G


Query : 1997A&A...325L..17G

1997A&A...325L..17G - Astronomy and Astrophysics, volume 325, L17-20 (1997/9-2)

BeppoSAX observation of 3C 273: broadband spectrum and detection of a low-energy absorption feature.

GRANDI P., GUAINAZZI M., MINEO T., PARMAR A.N., FIORE F., MATTEUZZI A., NICASTRO F., PEROLA G.C., PIRO L., CAPPI M., CUSUMANO G., FRONTERA F., GIARRUSSO S., PALAZZI E. and PIRAINO S.

Abstract (from CDS):

We report the results of a 3C 273 observation performed during the Science Verification Phase (SVP) of the BeppoSAX satellite. The broad-band spectrum is well represented by a power-law between ∼1keV and 200keV. The spectral slope is flat ({GAMMA}∼1.6), with a weak emission line at ∼6.4keV (rest frame) of EW ∼30eV. Below 1keV, a deviation from a power-law due to an absorption feature plus a soft component is present. This is the first time that a feature in absorption at ∼0.5keV (observer frame) is unambiguously detected in 3C 273.

Abstract Copyright:

Journal keyword(s): X-ray: observations - Quasar: individual: 3C 273

Errata: Erratum vol. 333, p. 762

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5555 1
2 QSO B2155-304 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1639 1

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2022.05.20-19:15:21

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